Intraoperative 3D Imaging System is a technology that uses computer technology to convert a two-dimensional image into a three-dimensional image. It utilizes image processing and computer vision technology to generate a three-dimensional model by processing and synthesizing multiple two-dimensional images. The intraoperative 3D imaging system can present the internal structure of the human body in three-dimensional form, providing more information for medical diagnosis and surgical treatment.
A phrase that has been emphasized in the orthopaedic community is: pay attention to imaging information! Why is that? Because, only by seeing clearly, can we treat accurately. It’s like a map in the right position in order to walk correctly. Therefore the film is clear, the target of shooting is clear, so that attention to detail can be paid and no trace is missed. No matter how skillful the surgeon is, if there is no clear image to escort the surgery, it is like a long-distance runner running a marathon race but running in the wrong direction, and the result will be that he or she misses the target by a thousand miles. Therefore, modern surgeries require a particularly high level of image clarity.
The intraoperative 3D imaging system can quickly generate cross-sectional, sagittal, coronal and rotatable three-dimensional images during surgery through acquisition, providing the operator with a 360° dead-angle-free observation angle, and accurately judging the situation of bone tissues and implants in an all-round way, which guarantees the implementation of the surgery, greatly improves the success rate of the surgery, and reduces the probability of complications.
Choosing a suitable intraoperative 3D imaging system requires consideration of the performance of the equipment as well as the economic benefits. To this end, I give you a summary of the usual orthopedic surgeons are more concerned about the top ten demand points for your reference.
I. Intraoperative three-dimensional imaging system registration certificate category
National Drug Administration (NMPA) is now implemented in the 2017 “Medical Device Classification Catalog“, “mobile C-arm X-ray machine” category is divided into, with “digital tomography” or “digital subtraction C-arms with the function of “digital tomography” or “digital subtraction angiography” are managed according to the Class III registration certificate. Other C-arms used for surgical fluoroscopy and photography to obtain images for clinical diagnosis are under the management of Class II registration.
At present, foreign brands of intraoperative 3D imaging systems, such as Siemens and Ziehm, are all Class III medical device registration certificate, while Perlove Medical is the first domestic brand to get a Class III registration certificate for 3D C.
The larger the detector size, the larger the intraoperative 3D imaging field of view, displaying more image information. Perlove’s intraoperative 3D imaging system adopts a 30cm×30cm dynamic flat panel detector, which outputs high-resolution and large-size 3D images, and can take pictures of the whole cervical vertebrae, the whole lumbar vertebrae, the seven thoracic vertebrae, the bilateral sacroiliac joints, the femoral head and the unilateral pelvis at one time. Compared with the small field of view of the C-arm, it avoids the radiation and waste of time caused by multiple shootings.
The rack design of 3D imaging systems on the market can be divided into two common types: isocenter and variable isocenter. The motion trajectory of the variable isocenter rack is elliptical, and during the acquisition process, the whole process of adjusting the motion to maintain the relative position of the ray and the lesion point, the motion artifacts are heavy, and the image is blurred; the motion trajectory of the 3D C-arm of the isocenter rack is a positive circle, which always keeps the shooting subject in the center of the ray beam, avoids the motion of the C-arm rack in the non-rotational direction, and reduces the motion artifacts at the root, and makes the image clearer.
The larger the opening, the wider the surgical space. The opening of Perlove 3D imaging system can be up to 90cm, which is suitable for the size requirements of various clinical positions.
In recent years, orthopedic surgical robots have been more and more widely used in the clinic, and 3D imaging is the basis for the surgical execution of the robotic system, which has the dual roles of map localization and effect checking, so that the surgical execution is more accurate and the verification of surgical effect is more guaranteed.
The cooperation between intraoperative 3D imaging system and orthopedic surgical robot is mainly for some difficult and complex surgeries in the current clinical application of surgery, especially in spinal surgery and other clinical surgeries that require high accuracy, such as thoracolumbar screws, cervical screws placement, pelvis and other clinical surgeries.
The first domestic high-end intraoperative 3D imaging system independently developed by Perlove – PLX7500A mobile flat plate 3D C-arm, which is characterized by “intraoperative 3D imaging and precise surgical guarantee”, is known as the “intraoperative